least one is dead. national security correspondent jennifer griffin is with an update of still breaking story. good evening. good evening. one american has been killed at the b.p. oil complex. the u.s. officials identified him as frederick boutaccio, texas resident that had an heart attack when algerians attempted a rescue yesterday. u.s. officials recovered his remains on friday and notified his family. tonight the standoff is ongoing and dangerous for those being held. exchange for two american hostages, the kidnappers want two convicted terrorist released from u.s. prisons. the blind sheikh, who is incarcerated for life for his role in the 1993 world trade center bombing. and sadikibe, a pakistani neuroscientist who shot two american seasonals in afghanistan. the state department immediately ruled that out. the united states does not negotiate with terrorists. the state department pentagon and white house all were quick to call the attack